Young Adam is a 2003 British erotic drama film written and directed by David Mackenzie and starring Ewan McGregor, Tilda Swinton, Peter Mullan, Ewan Stewart and Emily Mortimer. The film is based on the 1954 novel of the same name by Alexander Trocchi.

David Mackenzie is a Scottish film director and co-founder of the Glasgow-based production company Sigma Films. He has made ten feature films including Young Adam (2003), Hallam Foe (2007), Perfect Sense (2011) and Starred Up (2013). In 2016, Mackenzie's film Hell or High Water premiered at Cannes and was theatrically released in the United States in August. The same year he executive produced Damnation, a TV pilot for Universal and USA Network. Mackenzie also directed Outlaw King (2018), a historical film for Netflix. Mackenzie and his films have been described as not fitting neatly into any particular genre or type.